package Classe;

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.geom.RoundRectangle2D;
import javax.swing.JButton;


public class RoundedCornerButton extends JButton {
  private static final float arcwidth  = 16.0f;
  private static final float archeight = 16.0f;
  protected static final int focusstroke = 2;
  protected final Color fc = new Color(100,150,255,200);
  protected final Color ac = new Color(230,230,230);
  protected final Color rc = Color.ORANGE;
  protected Shape shape;
  protected Shape border;
  protected Shape base;
  public RoundedCornerButton(String text) {
    super(text);
    //setRolloverEnabled(true);
    setContentAreaFilled(false);
    setBackground(new Color(250, 250, 250));
    initShape();
  }
  protected void initShape() {
    if(!getBounds().equals(base)) {
      base = getBounds();
      shape = new RoundRectangle2D.Float(0, 0,
                        getWidth()-1, getHeight()-1,
                        arcwidth, archeight);
      border = new RoundRectangle2D.Float(focusstroke, focusstroke,
                        getWidth()-1-focusstroke*2,
                        getHeight()-1-focusstroke*2,
                        arcwidth, archeight);
    }
  }
  @Override protected void paintComponent(Graphics g) {
    initShape();
    Graphics2D g2 = (Graphics2D)g;
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                        RenderingHints.VALUE_ANTIALIAS_ON);
    if(getModel().isArmed()) {
      g2.setColor(ac);
      g2.fill(shape);
    }else if(isRolloverEnabled() && getModel().isRollover()) {
      paintFocusAndRollover(g2, rc);
    }else if(hasFocus()) {
      paintFocusAndRollover(g2, fc);
    }else{
      g2.setColor(getBackground());
      g2.fill(shape);
    }
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                        RenderingHints.VALUE_ANTIALIAS_OFF);
    g2.setColor(getBackground());
    super.paintComponent(g2);
  }
  private void paintFocusAndRollover(Graphics2D g2, Color color) {
    g2.setPaint(new GradientPaint(0, 0, color,
                                  getWidth()-1, getHeight()-1, color.brighter(), true));
    g2.fill(shape);
    g2.setColor(getBackground());
    g2.fill(border);
  }
  @Override protected void paintBorder(Graphics g) {
    initShape();
    Graphics2D g2 = (Graphics2D)g;
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                        RenderingHints.VALUE_ANTIALIAS_ON);
    g2.setColor(getForeground());
    g2.draw(shape);
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                        RenderingHints.VALUE_ANTIALIAS_OFF);
  }
  @Override public boolean contains(int x, int y) {
    initShape();
    return shape.contains(x, y);
  }
}
